diff --git a/hwe/func.php b/hwe/func.php
index 2695f724..25c71887 100644
--- a/hwe/func.php
+++ b/hwe/func.php
@@ -832,7 +832,7 @@ function CoreCommandTable() {
     } else {
         addCommand("국기 변경", 81, 0);
     }
-    if($nation['level']==7 && !$nationAux['used_82']??0){
+    if($nation['level']==7 && !($nationAux['used_82']??0)){
         addCommand("국호 변경", 82, 1);
     }
     else{
diff --git a/hwe/processing.php b/hwe/processing.php
index 71a393c4..cd5d4827 100644
--- a/hwe/processing.php
+++ b/hwe/processing.php
@@ -2634,7 +2634,7 @@ function command_82($turn, $command) {
 
     starter("국호변경");
 
-    if($nation && $nation['level'] == 7 && !$nationAux['used_82']??0){
+    if($nation && $nation['level'] == 7 && !($nationAux['used_82']??0)){
 ?>
 나라의 이름을 바꿉니다. 황제가 된 후 1회 가능합니다.<br>